The Agilent/Keysight 10702A is a single-axis linear interferometer for precision displacement measurement in metrology, calibration, and scientific research applications. It employs laser beam splitting and recombination to generate interference patterns, enabling displacement determination with exceptional accuracy and long-term stability. The 10702A delivers sub-nanometer resolution and parts-per-million accuracy across measurement ranges up to 40 meters, making it suited for demanding high-precision environments requiring stable, repeatable results.
Technical Specifications
• Wavelength: 633 nm (HeNe laser)
• Fundamental Optical Resolution: λ/2 (316.5 nm, 12.5 µin)
• System Resolution: λ/64 (10 nm, 0.4 µin) with 32× electronic extension; λ/512 (1.2 nm, 0.047 µin) with 256× electronic extension
• Measurement Range: Up to 40 meters
• Accuracy: ±0.1 ppm
• Temperature Coefficient: ±0.01 ppm/°C
• Stability: ±0.02 ppm over 8 hours
• Operating Temperature: 0°C to 40°C
• Storage Temperature: −40°C to 70°C
• Beam Diameter: 6 mm nominal
• Beam Separation: 12.7 mm (0.5 in)
• Dimensions: 38.1 mm × 38.1 mm × 127 mm (1.5 in × 1.5 in × 5 in)
• Weight: 0.4 kg (0.88 lbs); Option 001: 232–246 g (8.2–8.7 oz)
– Key Features
• Quadrature sinusoidal output signals
• Electronic resolution extension to 256× for sub-1 nm measurement capability
• Beam deflection up to 30 arc-minutes; alignment critical to avoid cosine error or signal loss
• Turned configuration available with Option 001
• Convertible to plane mirror interferometer (10706A) or high-stability plane mirror configuration (10706B) using optional adapters
– Typical Applications
• Precision dimensional metrology
• Laser transducer measurement systems
• Calibration and standards work
• Scientific displacement measurement
– Compatibility & Integration
• Required Reflector: 10703A Retroreflector
• Mount: 10711A
• Plane Mirror Converter: 10722A (requires additional 10703A Retroreflector)
• High Stability Adapter: 10723A
• Optically Identical: Agilent 10766A (features metric dimensions and calibrator-grade housing)
